EP0163504A3 - Video apparatus for correcting time-base errors and for compensating drop-outs - Google Patents

Video apparatus for correcting time-base errors and for compensating drop-outs Download PDF

Info

Publication number
EP0163504A3
EP0163504A3 EP85303698A EP85303698A EP0163504A3 EP 0163504 A3 EP0163504 A3 EP 0163504A3 EP 85303698 A EP85303698 A EP 85303698A EP 85303698 A EP85303698 A EP 85303698A EP 0163504 A3 EP0163504 A3 EP 0163504A3
Authority
EP
European Patent Office
Prior art keywords
video data
memory
drop
compensating
digital video
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85303698A
Other versions
EP0163504A2 (en
EP0163504B1 (en
Inventor
Mitsushige Tatami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to AT85303698T priority Critical patent/ATE68307T1/en
Publication of EP0163504A2 publication Critical patent/EP0163504A2/en
Publication of EP0163504A3 publication Critical patent/EP0163504A3/en
Application granted granted Critical
Publication of EP0163504B1 publication Critical patent/EP0163504B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/88—Signal drop-out compensation
    • H04N9/882—Signal drop-out compensation the signal being a composite colour television signal
    • H04N9/885—Signal drop-out compensation the signal being a composite colour television signal using a digital intermediate memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/89—Time-base error compensation
    • H04N9/896—Time-base error compensation using a digital memory with independent write-in and read-out clock generators

Abstract

An apparatus for correcting a time-base error and for compensating a drop-out in a reproduced video signal includes a random access memory (24) for memorizing a reproduced digital video data stream, a correct video data producing circuit (36) connected to the memory (24) for producing correct video data from the digital video data stream read out from the memory (24), a switching circuit (22) controlled by a drop-out detecting pulse for selectively supplying the digital video data and the correct video data to the memory (24), and a control circuit (31) for controlling a write and read operation of the memory (24) so that digital video data read out from the memory (24) are supplied to the memory (24) via the correct video data producing circuit (36) for compensating a drop-out during generation of a drop-out indicating pulse.
EP85303698A 1984-05-26 1985-05-24 Video apparatus for correcting time-base errors and for compensating drop-outs Expired - Lifetime EP0163504B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85303698T ATE68307T1 (en) 1984-05-26 1985-05-24 VIDEO DEVICE FOR CORRECTING TIME BASE ERROR AND COMPENSATING LOSS OF SIGNAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59107294A JP2544323B2 (en) 1984-05-26 1984-05-26 Playback video signal correction circuit
JP107294/84 1984-05-26

Publications (3)

Publication Number Publication Date
EP0163504A2 EP0163504A2 (en) 1985-12-04
EP0163504A3 true EP0163504A3 (en) 1988-01-20
EP0163504B1 EP0163504B1 (en) 1991-10-09

Family

ID=14455452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85303698A Expired - Lifetime EP0163504B1 (en) 1984-05-26 1985-05-24 Video apparatus for correcting time-base errors and for compensating drop-outs

Country Status (8)

Country Link
US (1) US4680658A (en)
EP (1) EP0163504B1 (en)
JP (1) JP2544323B2 (en)
KR (1) KR940000635B1 (en)
AT (1) ATE68307T1 (en)
AU (1) AU581660B2 (en)
CA (1) CA1252198A (en)
DE (1) DE3584315D1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61158288A (en) * 1984-12-29 1986-07-17 Sony Corp Video signal reproducer
JPH0732493B2 (en) * 1985-02-13 1995-04-10 ソニー株式会社 Speed error correction device
US4796243A (en) * 1985-06-21 1989-01-03 Nec Corporation Time base correcting apparatus
US4864422A (en) * 1985-09-21 1989-09-05 Robert Bosch Gmbh Processor for video signals obtained from an information carrier such as a magnetic tape
US5124806A (en) * 1985-09-21 1992-06-23 Robert Bosch Gmbh Digital pulse generator phase-locked to color television video signals and means and method for thereby compensating for tape velocity timing errors
US4930024A (en) * 1986-03-26 1990-05-29 Kabushiki Kaisha Toshiba Variable speed magnetic medium recording and playback apparatus
JPH0722769Y2 (en) * 1986-04-11 1995-05-24 ソニー株式会社 Dropout compensation circuit
JPH06101860B2 (en) * 1986-04-11 1994-12-12 ソニー株式会社 Time axis correction device
US5148291A (en) * 1986-05-21 1992-09-15 Canon Kabushiki Kaisha Apparatus for displaying image signal drop-out
DE3787324T2 (en) * 1986-06-20 1994-03-31 Sony Corp Video memory.
JPH0773361B2 (en) * 1987-01-20 1995-08-02 パイオニア株式会社 Information playback device
DE3881245T2 (en) * 1987-03-20 1993-09-02 Pioneer Electronic Corp FAILURE DETECTOR CIRCUIT.
JPS63234451A (en) * 1987-03-20 1988-09-29 Pioneer Electronic Corp Drop-out detecting circuit
JPH0773367B2 (en) * 1987-06-29 1995-08-02 パイオニア株式会社 Recorded information reproducing device
US5034827A (en) * 1987-06-30 1991-07-23 Canon Kabushiki Kaisha Video signal processing apparatus with memory read/write timing related to horizontal scanning period
KR940001838B1 (en) * 1990-11-09 1994-03-09 삼성전자 주식회사 Picture signal data splite circuit
JPH04286297A (en) * 1991-03-14 1992-10-12 Nec Corp Transmission line erroe detecting and compensating circuit of color television signal
JP3788677B2 (en) * 1997-11-14 2006-06-21 富士通株式会社 CONTINUOUS RECORDING SYSTEM AND METHOD, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING LONG TIME RECORDING PROGRAM
ES2642895T3 (en) 2009-11-24 2017-11-20 Dow Global Technologies Llc Method and apparatus for determining elasticity in molten con

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081826A (en) * 1975-05-15 1978-03-28 Sony Corporation Video time base corrector
US4212027A (en) * 1974-04-25 1980-07-08 Ampex Corporation Time base compensator
US4287529A (en) * 1978-04-28 1981-09-01 Sony Corporation Time base error correcting apparatus
US4315331A (en) * 1980-02-01 1982-02-09 Ampex Corporation Apparatus for providing drop-out compensation in recording and reproducing systems
US4345272A (en) * 1979-10-05 1982-08-17 Sony Corporation Video signal processing apparatus
FR2529424A1 (en) * 1982-06-29 1983-12-30 Sony Corp APPARATUS FOR REPRODUCING COLOR VIDEO SIGNALS

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923154B2 (en) * 1976-10-08 1984-05-31 ソニー株式会社 Color video signal reproducing device
JPS6044738B2 (en) * 1977-05-18 1985-10-05 ソニー株式会社 digital signal processing device
JPS53148317A (en) * 1977-05-31 1978-12-23 Sony Corp Error correction unit for time axis
JPS6052510B2 (en) * 1977-07-28 1985-11-19 ソニー株式会社 signal processing device
JPS5439610A (en) * 1977-09-05 1979-03-27 Sony Corp Pcm signal transmission system
US4389678A (en) * 1979-10-05 1983-06-21 Nippon Electric Co., Ltd. Digital time-base corrector for special motion reproduction by helical-scan VTR
JPS56131272A (en) * 1980-03-18 1981-10-14 Sony Corp Time-axis correcting device
JPS5835703A (en) * 1981-08-24 1983-03-02 Asahi Optical Co Ltd Reproducer for recording information

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212027A (en) * 1974-04-25 1980-07-08 Ampex Corporation Time base compensator
US4081826A (en) * 1975-05-15 1978-03-28 Sony Corporation Video time base corrector
US4287529A (en) * 1978-04-28 1981-09-01 Sony Corporation Time base error correcting apparatus
US4345272A (en) * 1979-10-05 1982-08-17 Sony Corporation Video signal processing apparatus
US4315331A (en) * 1980-02-01 1982-02-09 Ampex Corporation Apparatus for providing drop-out compensation in recording and reproducing systems
FR2529424A1 (en) * 1982-06-29 1983-12-30 Sony Corp APPARATUS FOR REPRODUCING COLOR VIDEO SIGNALS

Also Published As

Publication number Publication date
ATE68307T1 (en) 1991-10-15
AU581660B2 (en) 1989-03-02
US4680658A (en) 1987-07-14
CA1252198A (en) 1989-04-04
EP0163504A2 (en) 1985-12-04
AU4275085A (en) 1985-11-28
KR850008539A (en) 1985-12-18
DE3584315D1 (en) 1991-11-14
KR940000635B1 (en) 1994-01-26
JPS60251566A (en) 1985-12-12
EP0163504B1 (en) 1991-10-09
JP2544323B2 (en) 1996-10-16

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